This document summarizes a webinar hosted by Kimbia about sustaining donor recruitment and conversion. Kimbia provides nonprofit fundraising software. The webinar discusses different sustaining donor models like specific impact and sustainable cash/green choice. It also covers best practices for prospecting potential sustaining donors using metrics like recency, frequency, monetary value. The webinar outlines conversion pathways like email series and offers to incentivize donors to become sustaining supporters. It emphasizes testing different sustaining donor recruitment and retention strategies.